CN103639566A - Method for welding stator winding and leading cable of energy-saving type motor - Google Patents
Method for welding stator winding and leading cable of energy-saving type motor Download PDFInfo
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- CN103639566A CN103639566A CN201310686434.7A CN201310686434A CN103639566A CN 103639566 A CN103639566 A CN 103639566A CN 201310686434 A CN201310686434 A CN 201310686434A CN 103639566 A CN103639566 A CN 103639566A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0056—Manufacturing winding connections
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Abstract
A method for welding a stator winding and a leading cable of an energy-saving type motor comprises the steps as follows: 1), a plurality of electromagnetic wires provided with enameled covers are tightly twisted; 2), a brazing welding gun is adopted to melt end sections of the electromagnetic wires together, the outer flame is utilized to prolong the end sections toward the length direction by 12-18 cm, the enameled covers of the electromagnetic wires are burned out, and burnt enameled cover insulating materials at other parts are completely dropped; 3), while the electromagnetic wires are molten, leading cable bare conductors are placed beside the welding gun, end sections of the leading cable bare conductors are molten together, and at the moment, the end sections of the electromagnetic wires and the leading cable bare conductors are butted and molten together; and 4), a silver-copper welding rod containing 4%-5% of silver is utilized to fill a V-shaped gap formed in the middle when the end sections are molten together. With the adoption of the method for welding the stator winding and the leading cable of the energy-saving type motor, the motor efficiency is improved, the production cost is saved, and safety and reliability of the motor during high-efficient and energy-saving operation are guaranteed; and the method is applicable to the high-efficient and ultrahigh-efficient energy-saving type motor.
Description
Technical field
The present invention relates to machine field, relate in particular to a kind of energy-saving electrical machine stator winding and jump lead welding method.
Background technology
The height of three-phase AC asynchronous motor efficiency determines by the size of each lossy, and wherein the ratio of the shared total losses of copper loss of stator winding is of large percentage in five lossies.Therefore by new technology, new technology, reduce the welding contact resistance of motor leading cable and electromagnetic wire, stator copper loss and resistance value square proportional, raises the efficiency to reduce stator copper loss.If the contact resistance value of three-phase welding is uneven, can cause again the imbalance of three-phase current, cause motor not only not energy-conservation when operation, can make on the contrary the temperature rise of motor higher, after motor repeatedly starts, can be subject to the impact of large electric current and puncture connector lug.
Traditional welding method, take YE3-355L-2-315KW ultra-high efficient motor as example, the design of motor every circle of electromagnetic wire when 380V/50HZ is 44-Φ 1.5mm, 6-Φ 1.4mm and around, what finally access jump lead is these 50 electromagnetic wires, the enamel-cover diameter of every electromagnetic wire is thick is 0.08mm, containing the total sectional area of enamel-cover, is 96.6mm
2(bare conductor cross section is 87.04mm
2), it is 95mm that the cable leading of access connects bare conductor cross section
2.
During welding, by 50 electromagnetic wires with enamel-cover and 95mm
2jump lead bare conductor, adopt cutting pliers wringing to fit about 35-40mm length together, adopt soldering gun to melt at the end cross-sectional sintering wringing, the copper silver solder that adds argentiferous 5-6% fills up the cross section of sintering thawing round wire slot around, length is approximately 8-10mm, carries out the wrapping of insulating materials after cooling.Because whole welded section approximately reaches 190mm
2the wire being easy in the middle of making has the not molten possibility of burning, formed the hidden danger of rosin joint, increase contact resistance value, once there is one therefore to produce the quality problems that burn out, and after dissection, found to exist electromagnetism welded section to have rosin joint phenomenon, be subject to starting after heavy current impact, burning out joint and terminal plate.Fig. 1 is shown in by welding schematic diagram.
Summary of the invention
The object of this invention is to provide energy-saving electrical machine stator winding and jump lead welding method, by adopting the welding method of novel jump lead and stator winding electromagnetic wire, reduce contact resistance and to reduce stator copper loss, improve the efficiency of motor; Reduce the too high temperature in impact institute's jump lead joint of motor large electric current when starting, guarantee safe and reliable when energy-efficient operation of motor.
The present invention is achieved in that energy-saving electrical machine stator winding and jump lead welding method, it is characterized in that: comprise the following steps: 1) the some electromagnetic wires with enamel-cover are wrung; 2) adopt soldering gun to utilize flame core temperature highest region, control temperature is 1000-1100 ℃, electromagnetic wire end cross-sectional is melted and is integrated, again by welding gun away from electromagnetic wire, utilize flame envelope to postpone end cross-sectional toward length direction 12 ~ 18mm, control temperature at 500-600 ℃, the enamel-cover of some electromagnetic wires is burnt, now some electromagnetic wires that wring must be unclamped against wringing direction, what see is that end cross-sectional combines together, and the enamel insulation material that remainder burns all drops totally; 3) in fusing electromagnetic wire, jump lead bare conductor is placed on to the side of welding gun, the temperature of the welding gun side of the temperature of thawing electromagnetic wire more than 1000 degree is enough melted the end cross-sectional of jump lead bare conductor to be integrated, and now the jump lead bare conductor end cross-sectional docking of the electromagnetic wire end cross-sectional of melting and melting is combined together; 4) adopt argentiferous to reach the silver-bearing copper welding rod of 4-5%, silver-bearing copper welding fluid is filled up in V-type gap middle when two end cross-sectional are merged together again, and joint diameter is no more than the diameter of the electromagnetic wire wringing.
The present invention is easy to operate, has improved electric efficiency, has reduced stator copper loss, has saved production cost, guarantees safe and reliable in energy-efficient when operation of motor.
Accompanying drawing explanation
Fig. 1 is welding schematic diagram of the present invention;
In figure 1, electromagnetic wire, 2, V-type gap, 3, jump lead bare conductor.
The specific embodiment
Take YE3-355L-2-315KW ultra-high efficient motor as example, the design of motor every circle of electromagnetic wire when 380V/50HZ be 44-Φ 1.5+6-Φ 1.4 and around, what finally access jump lead is these 50 electromagnetic wires, and the enamel-cover diameter of every electromagnetic wire is thick is 0.08mm, containing the total sectional area of enamel-cover, is 96.6mm
2(bare conductor cross section is 87.04mm
2), the jump lead bare conductor cross section of access is 95mm
2.
Now 50 electromagnetic wires with enamel-cover are wrung, adopt soldering gun to utilize flame core temperature highest region, control temperature and be approximately 1000-1100 ℃, the electromagnetic wire that is 96.6mm2 by total sectional area melts and to be integrated--again by welding gun away from electromagnetic wire, utilize flame envelope to postpone end face cross section toward the about 15mm of length direction left and right, control temperature greatly about 500-600 ℃, the enamel-cover of 50 electromagnetic wires is burnt, now 50 electromagnetic wires that wring must be unclamped against wringing direction, what see is that end cross-sectional combines together, the enamel insulation material that remainder burns all drops totally, illustrate that 50 electromagnetic wires melt fully completely, centre does not have rosin joint, in fusing electromagnetic wire, the jump lead bare conductor of 95mm2 is on the side of welding gun (temperature is greatly about 800-900 ℃), and the temperature of melting the welding gun side of electromagnetic wire temperature more than 1000 degree is enough
willthe thawing of jump lead bare conductor end cross-sectional is integrated, now the jump lead bare conductor end cross-sectional docking of the electromagnetic wire end cross-sectional of melting and melting is merged to one, because electromagnetic wire and jump lead bare conductor end cross-sectional are round, adopt again argentiferous to reach the silver-bearing copper welding rod of 4-5%, silver-bearing copper welding fluid is filled up in V-type gap in the middle of when two end cross-sectional are merged together, joint diameter is no more than the diameter of the electromagnetic wire wringing,, make the joint of welding closely knit and no longer increase contact resistance value.Thus by comparing, can find out original traditional welding, although adopted the silver-bearing copper welding rod (cost ratio argentiferous wants high at the silver-bearing copper welding rod of 4-5%) of 5-6%, but for many cross section 50 wires like this of wire gauge, when welding is melted, middle wire is probably difficult to melting one, and middle enamel insulation material slag inclusion is also difficult to cleaning because cross section is thick, affect wire melting quality, so large cross section will be unclamped quickly and check that the adequacy of welding is also more difficult.The temperature of welding by research is controlled, unclamping of melting cross section checks and remove wringing again after enamel-cover residue, increases supplementing of silver-bearing copper welding fluid, just makes the introducing joint of motor there is no rosin joint, guarantees reliability service; Also do not make contact resistance increase, the increase of having controlled copper loss improves electric efficiency, has reached the energy efficiency of motor under security situation and has implemented.The present invention is applied to efficiently, ultra high efficiency energy-saving electrical machine.
Claims (1)
1. energy-saving electrical machine stator winding and jump lead welding method, is characterized in that: comprise the following steps: 1) the some electromagnetic wires with enamel-cover are wrung; 2) adopt soldering gun to utilize flame core temperature highest region, control temperature is 1000-1100 ℃, electromagnetic wire end cross-sectional is melted and is integrated, again by welding gun away from electromagnetic wire, utilize flame envelope to postpone end cross-sectional toward length direction 12 ~ 18mm, control temperature at 500-600 ℃, the enamel-cover of some electromagnetic wires is burnt, now some electromagnetic wires that wring must be unclamped against wringing direction, what see is that end cross-sectional combines together, and the enamel insulation material that remainder burns all drops totally; 3) in fusing electromagnetic wire, jump lead bare conductor is placed on to the side of welding gun, the temperature of the welding gun side of the temperature of thawing electromagnetic wire more than 1000 degree is enough melted the end cross-sectional of jump lead bare conductor to be integrated, and now the jump lead bare conductor end cross-sectional docking of the electromagnetic wire end cross-sectional of melting and melting is combined together; 4) adopt argentiferous to reach the silver-bearing copper welding rod of 4-5%, silver-bearing copper welding fluid is filled up in V-type gap middle when two end cross-sectional are merged together again, and joint diameter is no more than the diameter of the electromagnetic wire wringing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310686434.7A CN103639566B (en) | 2013-12-17 | 2013-12-17 | Energy-saving electrical machine stator winding and jump lead welding method |
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|---|---|---|---|
| CN201310686434.7A CN103639566B (en) | 2013-12-17 | 2013-12-17 | Energy-saving electrical machine stator winding and jump lead welding method |
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| CN103639566A true CN103639566A (en) | 2014-03-19 |
| CN103639566B CN103639566B (en) | 2016-04-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104708175A (en) * | 2015-03-16 | 2015-06-17 | 南京南瑞集团公司 | High-strength and equal-outer-diameter overall welding method for full-specification cable conductors |
| CN108544112A (en) * | 2018-04-19 | 2018-09-18 | 江苏江南电机有限公司 | A kind of high-power starter stator coil extraction soft whipping wire Joining Technology |
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| CN201584835U (en) * | 2009-12-02 | 2010-09-15 | 南阳防爆集团股份有限公司 | Insulated internal packaging motor stator winding |
| EP2587630A1 (en) * | 2010-07-26 | 2013-05-01 | Shenzhen Hopewin Technology Co., Ltd. | Slotless amorphous ferroalloy motor with radial magnetic circuit and manufacturing method thereof |
| CN102412667A (en) * | 2010-09-26 | 2012-04-11 | 山东华力电机集团股份有限公司 | Motor outgoing line welding protection cover |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104708175A (en) * | 2015-03-16 | 2015-06-17 | 南京南瑞集团公司 | High-strength and equal-outer-diameter overall welding method for full-specification cable conductors |
| CN108544112A (en) * | 2018-04-19 | 2018-09-18 | 江苏江南电机有限公司 | A kind of high-power starter stator coil extraction soft whipping wire Joining Technology |
| CN108544112B (en) * | 2018-04-19 | 2020-11-06 | 江苏江南电机有限公司 | Connection process for leading-out flexible stranded wire of stator coil of high-power starter |
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| Publication number | Publication date |
|---|---|
| CN103639566B (en) | 2016-04-27 |
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